Y Combinator-backed TeamNote is building an enterprise communication app that isn’t so much focused on the team, but on helping home base get important information to and from workers in the field.

Unlike many of its classmates at the Mountain View-based accelerator, TeamNote isn’t being developed by a couple of Millennials fresh out of college. Rather, they’re an established team from Hong Kong, and have been working together since 2010…

The original TeamNote app, which only launched last year, focused on secure messaging. This included password-protected conversations, the ability to send a message out to a group and get private replies, and even a feature to make sensitive messages disappear after a specific expiration date. As it expanded, the application has gained features for managing shifts for workers on the field, who can send back messages and photographs related to their work in to their company’s home base to complete tasks. There are also mobile training modules, letting teams quickly get new workers out on the field up to speed without making them sit down and watch an entire training session.

TeamNote is already in use at companies large and small, from teams of ten to organizations like Li Ka-Shing’s property management company Cheung Kong and workers in the Hong Kong and Macau governments.